Hach 900 MAX manual Section - Program Complete Output, Setpoint Sampling

Models: 900 MAX

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Section 3

Section 3

Step 12 - Program Complete Output

Program Complete Output sends a +12 V dc signal out Pin F of the Auxiliary Receptacle at the completion of the sampling program. This signal is also sent when a Full Bottle condition causes the program to complete. The Program Complete signal remains on (+12 V dc) for 61 seconds and then turns back off (0 V dc).

Program Complete Output is used for the following purposes:

Multiple Sampler Operation. Samplers are arranged in a “Cascade” control where the first sampler signals a second sampler to start its program when the first sampler’s program is complete. This feature requires the second sampler to be programmed for external

start operation.

To interface to a PC to signal the end of the sampling program.

To interface to a relay that trips a signal light in a control room to indicate that sampling is finished and samples are ready to be picked up.

12-A.From the Advanced Sampling menu highlight Program Complete using the UP and DOWN keys. Press SELECT to continue.

11:00 AM 21 - APR - 01

ADVANCED SAMPLING

SELECT

RETURN

PGM CMPLT OUTPUT

SETPOINT SAMPLING SPECIAL OUTPUTS

12-B.Enable or Disable Program Complete using the CHANGE CHOICE key.

12-C.Press ACCEPT to continue to Set Point Sampling.

Step 13 - Setpoint Sampling

Setpoint sampling allows the control of an automatic liquid sampler from one of up to 14 sources. Setpoint sampling defines a set of limits that inhibit sampling until an upset condition occurs, causing the limits to exceed. Sampling is enabled only when the waste stream falls outside the setpoints.

13-A.Highlight Setpoint Sampling using the UP and DOWN keys on the Advanced Sampling Menu. Press SELECT.

11:00 AM 21 - APR - 01

ADVANCED SAMPLING

SELECT

RETURN

PGM CMPLT OUTPUT

SETPOINT SAMPLING

SPECIAL OUTPUTS START/STOP TIMES

13-B.Enable or Disable Setpoint Sampling using the CHANGE CHOICE key. Press ACCEPT to continue.

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Advanced Sampling

8990startup.fm

Page 52
Image 52
Hach 900 MAX manual Section - Program Complete Output, Setpoint Sampling